E55 AMG acceleration problem after headers.
The same setup being, muffler delete, cat delete and resonator delete stock headers. After i installed the headers ive been experiencing a whole slew of problems, first gear is responsive after that the car has almost no acceleration even if i put my foot all the way down to the floor
it accelerates at the same pace. There is a fluttering/ticking sound when i accelerate coming from the bottom of the car and ive been assured there is no exhaust leak, there is also a vibration at the bottom at low rpm's when accelerating aggressively. When the shop installed the
headers they also installed a pair of hi flow cats and new spark-plugs, the cats where installed without my knowing, could they be the issue ? Ive reset the ECU both with the sneaky ECU reset and disconnecting the battery overnight. Please help, thank you guys in advance, cheers!
Header Link: https://ebay.to/2Qac9So
You'd be better off posting in the W211 AMG section.
The same setup being, muffler delete, cat delete and resonator delete stock headers. After i installed the headers ive been experiencing a whole slew of problems, first gear is responsive after that the car has almost no acceleration even if i put my foot all the way down to the floor
it accelerates at the same pace. There is a fluttering/ticking sound when i accelerate coming from the bottom of the car and ive been assured there is no exhaust leak, there is also a vibration at the bottom at low rpm's when accelerating aggressively. When the shop installed the
headers they also installed a pair of hi flow cats and new spark-plugs, the cats where installed without my knowing, could they be the issue ? Ive reset the ECU both with the sneaky ECU reset and disconnecting the battery overnight. Please help, thank you guys in advance, cheers!
Header Link: https://ebay.to/2Qac9So
The new airflow is causing havoc on your MAF calculation of optimal Air-Fuel ratio.
You need a tune. You can't just go slapping mods like that on without one. For a tune check out Eurocharged. https://www.eurocharged.com/products/c-75-/mercedes-benz/e-class/e55-en/55-series-performance-engine-software
Have you done cooling mods to the car yet? It's a very good idea to take care of that stuff before trying to get more power out of it.
Last edited by Strigoi; Sep 6, 2018 at 01:00 PM.
If it's your only car you'll want to flash it yourself. They just email you the tune file. Check their site, they explain all this stuff.
I've done tunes and back to stock multiple times on my E63 and it seriously takes less than 5 minutes to do. Mine is a bit different since I have an E63 and use their OBDII handheld unit for flashing though.
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WITH A 500 HP CAR, THAT IS GOING TO BE FUN
Just give Jerry a call, and explain your mods and what is happening.
He'll explain everything.
http://www.eurocharged.com/


